I just know I once read an interesting entry in an almanac once. (You all do remember almanacs. That’s what we used before we had the internet;).) Anyways, they said speakers of Swedish could almost understand other Scandinavian languages, I forget exactly which.
Also, another interesting story. Polish was my mother’s first language. And she told me, one time when she was a young girl, she saw a movie in Russian. And she said she was surprised, she could almost understand much of it. This is ironic, because Polish and Russian are both Slavic. But they are slightly different branches of that tree, I believe.
I know English has no such thing, i.e., a language that is mutually-intelligible. If you see a page in French or Spanish, or even Latin sometimes, you can pick out a word or
two. But those languages aren’t even in the same PIE family as English.
Ironic too, is the fact that French and Spanish are considered derived from Latin. But if you speak one, you certainly can’t understand the other.
What other languages are mutually-intelligible, even though they are considered separate languages? I brought up Scandinavian, English and Romance. But feel free to offer other examples, of entirely non-PIE languages even.
Thank you in advance to all who reply.